unit-tests: Defining TESTS_RUNNERS allows to only run specific test runners

src/libstrongswan/tests/test_runner.c

@@ -89,6 +89,28 @@ static void apply_filter(array_t *loaded, char *filter, bool exclude)
 	names->destroy(names);
 }
 
+/**
+ * Check if the given string is contained in the filter string.
+ */
+static bool is_in_filter(const char *find, char *filter)
+{
+	enumerator_t *names;
+	bool found = FALSE;
+	char *name;
+
+	names = enumerator_create_token(filter, ",", " ");
+	while (names->enumerate(names, &name))
+	{
+		if (streq(name, find))
+		{
+			found = TRUE;
+			break;
+		}
+	}
+	names->destroy(names);
+	return found;
+}
+
 /**
  * Removes and destroys test suites that are not selected or
  * explicitly excluded.
@@ -524,11 +546,17 @@ int test_runner_run(const char *name, test_configuration_t configs[],
 	enumerator_t *enumerator;
 	int passed = 0, result;
 	level_t level = LEVEL_SILENT;
-	char *cfg, *verbosity;
+	char *cfg, *runners, *verbosity;
 
 	/* redirect all output to stderr (to redirect make's stdout to /dev/null) */
 	dup2(2, 1);
 
+	runners = getenv("TESTS_RUNNERS");
+	if (runners && !is_in_filter(name, runners))
+	{
+		return EXIT_SUCCESS;
+	}
+
 	cfg = getenv("TESTS_STRONGSWAN_CONF");
 
 	suites = load_suites(configs, init, cfg);

src/libstrongswan/tests/test_runner.h

@@ -70,6 +70,7 @@ struct test_configuration_t {
  * - TESTS_VERBOSITY: Numerical loglevel for debug log
  * - TESTS_STRONGSWAN_CONF: Specify a path to a custom strongswan.conf
  * - TESTS_PLUGINS: Specify an explicit list of plugins to load
+ * - TESTS_RUNNERS: Run specific test runners only
  * - TESTS_SUITES: Run specific test suites only
  * - TESTS_SUITES_EXCLUDE: Don't run specific test suites
  * - TESTS_REDUCED_KEYLENGTHS: Test minimal keylengths for public key tests only
@@ -77,6 +78,9 @@ struct test_configuration_t {
  * Please note that TESTS_PLUGINS actually must be implemented by the init
  * callback function, as plugin loading is delegated.
  *
+ * EXIT_SUCCESS is returned right away if TESTS_RUNNERS is defined but the name
+ * passed to this function is not contained in it.
+ *
  * @param name			name of test runner
  * @param config		test suite constructors with dependencies
  * @param init_cb		init/deinit callback